CVE-2026-43414: In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport doub

Q: How do I fix CVE-2026-43414?

linux kernel: upgrade to 5.16, 6.2, 6.7, 6.8, 6.9, 6.19.9. Exact commands for each OS are on this page.

Q: Is CVE-2026-43414 being exploited?

CVE-2026-43414 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-43414 affect?

CVE-2026-43414 affects linux kernel. Severity is critical (CVSS 9.8). In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb() sp->free is set to qla2x00_els_dcmd_sp_free(). When an error happens, this function is called

This month

CRITICAL 9.8REMOTEWATCHLISTUPGRADE

CVE-2026-43414 is a critical-severity flaw (CVSS 9.8) affecting linux kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb() sp->free is set to qla2x00_els_dcmd_sp_free(). When an error happens, this function is called by qla2x00_sp_release(), when kref_put() releases the first and the last reference. qla2x00_els_dcmd_sp_free() frees fcport by calling qla2x00_free_fcport(). Doing it one more time after kref_put() is a bad id

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-415
Published	2026-05-08
Last modified	2026-10-21

Publisher (CNA): kernel.org · Vendor: linux

Last updated 2026-10-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-08 15:16 UTCPublished CVE record published
2026-10-21 13:18 UTCUpdated Record last modified

linux linux kernel UPGRADE

Affected: >= 5.15.154 and < 5.16 · >= 6.1.84 and < 6.2 · >= 6.6.24 and < 6.7 · >= 6.7.12 and < 6.8 · >= 6.8.3 and < 6.9 · >= 6.9.1 and < 6.19.9 · 6.9 · 6.9 rc2

Fixed in: 5.16, 6.2, 6.7, 6.8, 6.9, 6.19.9

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

Fedora 46 · fzssh · FIXED · 1.4.0-2.fc46 · FEDORA-2026-8004fcd067 · source

sudo dnf upgrade --advisory=FEDORA-2026-8004fcd067

Ubuntu 24.04 · linux · FIXED · 6.8.0-134.134

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.8.0-134.134" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 22.04 · linux · FIXED · 5.15.0-185.195

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.15.0-185.195" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 20.04 · linux · FIXED · 5.4.0-233.253

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.4.0-233.253" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 25.10 · linux · FIXED · 6.17.0-40.40

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.17.0-40.40" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 20.04 · linux-hwe-5.15 · FIXED · 5.15.0-185.195~20.04.1

sudo apt update && sudo apt install --only-upgrade linux-hwe-5.15 dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux-hwe-5.15)" ge "5.15.0-185.195~20.04.1" && echo PATCHED || echo STILL-VULNERABLE

Debian 12 · linux · NO FIX YET

Debian 13 · linux · NO FIX YET

RHEL 10 · kernel · FIXED · kernel-6.12.0-211.28.1.el10_2

sudo dnf upgrade --advisory=RHSA-2026:30129 rpm -q kernel

RHEL 10.0 Extended Update Support · kernel · FIXED · kernel-6.12.0-55.88.1.el10_0

sudo dnf upgrade --advisory=RHSA-2026:39371 rpm -q kernel

RHEL 9 · kernel · FIXED · kernel-5.14.0-687.17.1.el9_8

sudo dnf upgrade --advisory=RHSA-2026:27789 rpm -q kernel

RHEL 9.6 Extended Update Support · kernel · FIXED · kernel-5.14.0-570.125.1.el9_6

sudo dnf upgrade --advisory=RHSA-2026:34094 rpm -q kernel

RHEL 6 · kernel · DEFERRED

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-43414?

linux kernel: upgrade to 5.16, 6.2, 6.7, 6.8, 6.9, 6.19.9. Exact commands for each OS are on this page.

Is CVE-2026-43414 being exploited?

CVE-2026-43414 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-43414 affect?

CVE-2026-43414 affects linux kernel. Severity is critical (CVSS 9.8). In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb() sp->free is set to qla2x00_els_dcmd_sp_free(). When an error happens, this function is called

How urgent is CVE-2026-43414?

Priority 59/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Linux kernel vulnerabilities

Related CVEs

CVE-2026-98141 MEDIUM 5.5 UPGRADE In the Linux kernel, the following vulnerability has been resolved: ntfs: propagate reparse index insertion f
CVE-2026-64239 HIGH 7.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: delete tried regi
CVE-2026-64236 MEDIUM 5.5 UPGRADE In the Linux kernel, the following vulnerability has been resolved: i2c: davinci: fix division by zero on mis
CVE-2026-98142 MEDIUM 5.5 UPGRADE In the Linux kernel, the following vulnerability has been resolved: drm/cirrus-qemu: Validate BAR0 size durin
CVE-2026-98147 MEDIUM 5.5 UPGRADE In the Linux kernel, the following vulnerability has been resolved: printk: Don't WARN on kthread_run failure

References

← Back to latest CVEs